Do you honestly think that they have a limit to what they will sell? I could easily imagine them selling this access to companies that repossess vehicles. An 'ownership dispute' fee that prevents your car from starting and grants additional access to the company. As soon as I typed that I couldn't stop thinking that that has to be a real thing they make real money on already. If it isn't then my guess it is only because they haven't thought about it. Companies will do anything they are explicitly allowed to do or have plausible deniability on to make money.